Hard disk drive



FIG. 1 is a front, bottom and left side perspective view of a hard disk drive, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a right side elevational view thereof. 

The ornamental design for a hard disk drive, as shown and described. 